2018 Kia Forte Oil Type & Capacity: 5W-20 (4.23 quarts)
The 2018 Kia Forte takes 5W-20 motor oil — 4.23 quarts with a filter change, per the factory service manual.
Factory-spec answer
5W-20 — 4.23 quarts with filter
Oil capacity by engine
| Engine | Oil Type (viscosity) | Capacity w/ Filter | Capacity w/o Filter | Notes |
|---|---|---|---|---|
| EX | API-SM ILSAC GF-4 or above SAE 5W-20, SAE 5W-30 | 4.23 QTS. | — | For better fuel economy, it is recommended to use the engine oil of a viscosity grade SAE 5W-20 (API Service SM / ILSAC GF-4). |
| LX, Automatic Trans | API-SM ILSAC GF-4 or above SAE 5W-20, SAE 5W-30 | 4.23 QTS. | — | For better fuel economy, it is recommended to use the engine oil of a viscosity grade SAE 5W-20 (API Service SM / ILSAC GF-4). |
| LX, Standard Trans | API-SM ILSAC GF-4 or above SAE 5W-20, SAE 5W-30 | 4.23 QTS. | — | For better fuel economy, it is recommended to use the engine oil of a viscosity grade SAE 5W-20 (API Service SM / ILSAC GF-4). |
| S | API-SM ILSAC GF-4 or above SAE 5W-20, SAE 5W-30 | 4.23 QTS. | — | For better fuel economy, it is recommended to use the engine oil of a viscosity grade SAE 5W-20 (API Service SM / ILSAC GF-4). |
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More factory specs & repair guides for your Forte
🛞 2018 Kia Forte Tire Size & Pressure →🌧️ 2018 Kia Forte Wiper Blade Sizes →💡 2018 Kia Forte Light Bulb Sizes →📖 2018 Kia Forte Factory Service Manual →All fluid capacities (transmission, coolant, brakes)Powered by factory manual data from our partner network AllOEMManuals.com.
Coolant capacity
6.23 quarts (5.89 L) — 50/50 mixture of Ethylene Glycol Antifreeze and water
Frequently asked questions
What type of oil does a 2018 Kia Forte take?
The 2018 Kia Forte takes 5W-20 motor oil (API-SM ILSAC GF-4 or above SAE 5W-20, SAE 5W-30), per the factory service manual.
What is the oil capacity of a 2018 Kia Forte?
The 2018 Kia Forte oil capacity is 4.23 quarts with a filter change.
How often should I change the oil in my 2018 Kia Forte?
Most 2018 Kia Forte owners follow a 5,000–7,500 mile interval with conventional oil, or up to 10,000 miles with full synthetic. Always check the oil life monitor if equipped, and consult your owner's manual — Kia recommends intervals based on driving conditions, not just mileage.
Can I use synthetic oil in my 2018 Kia Forte?
Yes. 5W-20 is widely available as a full synthetic, and synthetic is safe (often recommended) for the 2018 Kia Forte. What matters most is matching the factory viscosity and specification, then changing the oil and filter on schedule.